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31.发明申请公开(公告)号：US20180231659A1
公开(公告)日：2018-08-16
申请号：US15296881
申请日：2016-10-18
Applicant: Luminar Technologies, Inc.
Inventor： Scott R. Campbell , Jason M. Eichenholz , Matthew D. Weed
CPC classification number: G01S17/102 , G01S7/4814 , G01S7/4815 , G01S7/4816 , G01S7/4876 , G01S7/497 , G01S17/08 , G01S17/88
Abstract: A lidar system with improved signal-to-noise ratio in the presence of solar background noise. The lidar system can comprise a light source to emit light toward a target. The light source can have an operating wavelength which lies within a band that delineates a relative maximum in atmospheric absorption. The lidar system can also include a detector to detect scattered light from the target and a processor to determine a characteristic of the target based on a characteristic of the scattered light received at the detector.
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公开(公告)号：US09897687B1
公开(公告)日：2018-02-20
申请号：US15479167
申请日：2017-04-04
Applicant: Luminar Technologies, Inc.
Inventor： Scott R. Campbell , Jason M. Eichenholz , Lane A. Martin , Matthew D. Weed
CPC classification number: G01S7/4817 , G01S7/4812 , G01S7/4816 , G01S17/10 , G01S17/42 , G01S17/89
Abstract: A lidar system may have a light source configured to emit pulses of light along a field of view of the light source and a scanner to scan the light source field of view in a scanning direction across a plurality of pixels located downrange from the lidar system. The scanner can direct a pulse of light, which is emitted by the light source along the light source field of view, toward a pixel and can scan a field of view of a first detector. The first detector field of view can be scanned in the scanning direction across the plurality of pixels and the scanning speed of the first detector field of view can be approximately equal to the scanning speed of the light source field of view. The first detector can detect a portion of the pulse of light scattered by a target located at least partially within the pixel.
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公开(公告)号：US09874635B1
公开(公告)日：2018-01-23
申请号：US15470718
申请日：2017-03-27
Applicant: Luminar Technologies, Inc.
Inventor： Jason M. Eichenholz , Austin K. Russell , Scott R. Campbell , Alain Villeneuve , Rodger W. Cleye , Joseph G. LaChapelle , Matthew D. Weed , Lane A. Martin
CPC classification number: G01S17/06 , G01S7/4804 , G01S7/4811 , G01S7/4814 , G01S7/4815 , G01S7/4816 , G01S7/4817 , G01S7/4818 , G01S7/483 , G01S7/484 , G01S7/4861 , G01S7/4863 , G01S7/4865 , G01S17/00 , G01S17/02 , G01S17/08 , G01S17/10 , G01S17/32 , G01S17/42 , G01S17/88 , G01S17/89 , G01S17/936 , H01S3/0007 , H01S3/0078 , H01S3/0085 , H01S3/06733 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/08086 , H01S3/094003 , H01S3/094042 , H01S3/094076 , H01S3/0941 , H01S3/10023 , H01S3/1106 , H01S3/1608 , H01S3/2383 , H01S5/0057 , H01S5/0085 , H01S5/4012 , H01S5/4087 , H01S2301/02
Abstract: A lidar system having a light source to emit an output beam and an overlap mirror having a reflecting surface with an aperture through which the output beam passes. The lidar system may include mirrors driven by a galvanometer scanner, a resonant scanner, a microelectromechanical systems device, or a voice coil motor. The mirrors may direct the output beam toward a light source field of view (FOV) and may move the light source FOV to different locations within a field of regard. The mirrors may receive reflected portions of the output beam as an input beam and direct the input beam toward the reflecting surface of the overlap mirror. The lidar system may include a receiver to receive the input beam from the reflecting surface of the overlap mirror. The receiver may have a receiver FOV that moves synchronously with, and at least partially overlaps, the light source FOV.
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公开(公告)号：US20170299721A1
公开(公告)日：2017-10-19
申请号：US15470735
申请日：2017-03-27
Applicant: Luminar Technologies, Inc.
Inventor： Jason M. Eichenholz , Austin K. Russell , Scott R. Campbell , Alain Villeneuve , Rodger W. Cleye , Joseph G. LaChapelle , Matthew D. Weed , Lane A. Martin
CPC classification number: G01S17/06 , G01S7/4804 , G01S7/4811 , G01S7/4814 , G01S7/4815 , G01S7/4816 , G01S7/4817 , G01S7/4818 , G01S7/483 , G01S7/484 , G01S7/4861 , G01S7/4863 , G01S7/4865 , G01S17/00 , G01S17/02 , G01S17/08 , G01S17/10 , G01S17/32 , G01S17/42 , G01S17/88 , G01S17/89 , G01S17/936 , H01S3/0007 , H01S3/0078 , H01S3/0085 , H01S3/06733 , H01S3/0675 , H01S3/06754 , H01S3/06758 , H01S3/08086 , H01S3/094003 , H01S3/094042 , H01S3/094076 , H01S3/0941 , H01S3/10023 , H01S3/1106 , H01S3/1608 , H01S3/2383 , H01S5/0057 , H01S5/0085 , H01S5/4012 , H01S5/4087 , H01S2301/02
Abstract: A lidar system with a light source to emit a pulse of light into a field of view and a receiver to detect a return pulse of light which is reflected or scattered by a target in the field of view. The receiver may include an avalanche photodiode to generate an electrical-current pulse corresponding to the return pulse and a transimpedance amplifier to produce a voltage pulse that corresponds to the electrical-current pulse. A voltage amplifier may amplify the voltage pulse and a comparator may produce an edge signal when the amplified voltage pulse exceeds a threshold. A time-to-digital converter may determine a time interval based on an emission time of the pulse of light and based on the edge signal. A processor may determine a distance to the target using the time interval.
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公开(公告)号：US20170131387A1
公开(公告)日：2017-05-11
申请号：US15342595
申请日：2016-11-03
Applicant: Luminar Technologies, Inc.
Inventor： Scott R. Campbell , Jason M. Eichenholz , Lane A. Martin , Matthew D. Weed
CPC classification number: G01S7/4817 , G01S7/4812 , G01S7/4816 , G01S17/10 , G01S17/42 , G01S17/89
Abstract: A lidar system may have a light source configured to emit a pulse of light and a scanner that scans a field of view of the light source in a forward-scanning direction across a plurality of pixels located downrange from the lidar system. The scanner can direct the pulse of light toward the second pixel and scan a field of view of a first detector. The first-detector field of view can be offset from the light-source field of view in a direction opposite the forward-scanning direction. When the pulse is emitted, the first-detector field of view can at least partially overlap the first pixel and the light-source field of view can at least partially overlap the second pixel. The first detector can be configured to detect a portion of the pulse of light scattered by a target located at least partially within the second pixel.
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Patent Agency Ranking
公开(公告)号：US10684360B2
公开(公告)日：2020-06-16
申请号：US15713192
申请日：2017-09-22
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell
Abstract: A lidar system includes a light source configured to emit pulses of light, a scanner configured to direct the pulses of light along a scan direction, and a receiver with a detector configured to detect the pulses of light scattered by remote targets. For a pulse of light emitted by the light source, the receiver is configured to detect the scattered pulse of light returning to the receiver during a ranging time interval between (i) when the pulse of light leaves the lidar system and (ii) when the scattered pulse of light returns from a remote target positioned at a maximum distance RMAX. For at least a portion of the ranging time interval, the lidar system directs the scattered pulse of light toward the active region of the detector at an oblique angle to reduce an amount of light impinging on the active region.
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公开(公告)号：US10571567B2
公开(公告)日：2020-02-25
申请号：US15965197
申请日：2018-04-27
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell , Jason M. Eichenholz , Austin K. Russell , John G. Hughes
IPC: G01S17/08 , G01S7/481 , G01S17/93 , G02B26/10 , G02B26/12 , H01L27/146 , G01S17/42 , G02B5/09 , G02B7/182 , G01S17/89 , G02B27/09 , G02B27/10 , G02B27/30 , H01L25/16 , G01S17/87 , G02B5/08 , G02B5/18 , G02B5/22
Abstract: A lidar system comprises a light source configured to emit light, a scanner configured to direct the emitted light to scan a field of regard of the lidar system in accordance with a scan pattern, a receiver configured to detect the light scattered by one or more remote targets, and a controller configured to control motion of at least the second mirror to modify the scan pattern. The scanner includes a rotatable polygon mirror having a block having a first wall, a second wall, and reflective surfaces extending between the first and second walls, the reflective surfaces being angularly offset from one another along a periphery of the block. The scanner also includes a polygon mirror axle extending into the block through at least one of the first and second walls, about which the block rotates, and a second mirror pivotable along an axis orthogonal to the polygon mirror axle.
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公开(公告)号：US10545240B2
公开(公告)日：2020-01-28
申请号：US15917628
申请日：2018-03-10
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： Scott R. Campbell , Joseph G. LaChapelle , Jason M. Eichenholz , Austin K. Russell
Abstract: A lidar system includes a transmitter that encodes successive transmit pulses with different pulse characteristics and a receiver that detects the pulse characteristics of each received (scattered or reflected) pulse and that distinguishes between the received pulses based on the detected pulse characteristics. The lidar system thus resolves range ambiguities by encoding pulses of scan positions in the same or different scan periods to have different pulse characteristics, such as different pulse widths or different pulse envelope shapes. The receiver includes a pulse decoder configured to detect the relevant pulse characteristics of the received pulse and a resolver that determines if the pulse characteristics of the received pulse matches the pulse characteristics of the current scan position or that of a previous scan position.
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公开(公告)号：US10418776B2
公开(公告)日：2019-09-17
申请号：US15901838
申请日：2018-02-21
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： David Welford , Martin A. Jaspan , Jason M. Eichenholz , Scott R. Campbell , Lane A. Martin , Matthew D. Weed
IPC: G01S17/88 , H01S3/11 , G01S17/42 , G01S7/484 , H01S3/06 , H01S3/113 , H01S3/094 , G01S17/10 , H01S3/30 , G01S7/481 , H01S3/102 , H01S3/0941 , H01S3/08 , H01S3/16 , H01S3/00
Abstract: A lidar system can include a solid-state laser to emit pulses of light. The solid-state laser can include a Q-switched laser having a gain medium and a Q-switch. The lidar system can also include a scanner configured to scan the emitted pulses of light across a field of regard and a receiver configured to detect at least a portion of the scanned pulses of light scattered by a target located a distance from the lidar system. The lidar system can also include a processor configured to determine the distance from the lidar system to the target based at least in part on a round-trip time of flight for an emitted pulse of light to travel from the lidar system to the target and back to the lidar system.
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公开(公告)号：US10324185B2
公开(公告)日：2019-06-18
申请号：US15965471
申请日：2018-04-27
Applicant: LUMINAR TECHNOLOGIES, INC.
Inventor： John E. McWhirter , Scott R. Campbell
Abstract: An optical scanner includes a rotatable polygon mirror and a second mirror. The rotatable polygon mirrors includes a block having a first wall, a second wall, and reflective surfaces extending between the first and second walls, the reflective surfaces being angularly offset from one another along a periphery of the block; a polygon mirror axle extending into the block through at least one of the first and second walls, about which the block rotates; a motor driving rotation of the block; and chamfers in the block, each of the chamfers being bounded by a pair of adjacent reflective surfaces and the second wall. The second mirror is pivotable along an axis orthogonal to the polygon mirror axle and more proximate to the second wall of the block than the first wall of the block.
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